Screening of ACC-deaminase and antifungal metabolites producing fluorescent pseudomonads isolated from rhizosphere soil of groundnut

Plant Growth Promoting Rhizobacteria that can colonize the root systems are an efficient group of beneficial bacteria. Fluorescent pseudomonads belong to this category that can enhance plant growth and disease suppression by different types of mechanisms. Fifty five fluorescent pseudomonads (JS 1….JS 55) identified from soil samples collected from different places of Rayalaseema region located in Andhra Pradesh, screened for ACC-deaminase enzyme activity and antifungal metabolites production. Results showed that it is highly likely that these pseudomonads isolates deaminated endogenous ACC. Furthermore, these isolates remarkably producing antifungal metabolites like siderophores, chitinases and antibiotics. Among these, 5 isolates (JS 7, JS 16, JS 24, JS 31 and JS 44) are efficient producers of ACC-deaminase and antifungal metabolites.